Journal of Agricultural Science and TechnologyJASTAgriculturehttp://journals.modares.ac.ir1admin1680-70732345-3737enjalali139541gregorian201671184online1fulltextenEffect of Canola Physical Mutation on <i>Plutella xylostella</i> (L.) Life TableLife history of insect herbivores is unclear after feeding on mutant lines of many crops. To shed light, demographic parameters of <em>Plutella xylostella </em>on three canola cultivars (&ldquo;Zar&rdquo;, &ldquo;RGS&rdquo;, &ldquo;Talaye&rdquo;) and their physical mutation-derived lines (&ldquo;Zar 9-9&rdquo;, &ldquo;RGS 8-1&rdquo;, &ldquo;RGS 10-2&rdquo;, &ldquo;RGS 8-13&rdquo; and &ldquo;Talaye 8-3&rdquo;) were determined under greenhouse condition. Methods of life table including the female age specific life table and the age-stage, two-sex life table were applied. According to two-sex life table, there was no significant difference between demographic parameters of <em>P. xylostella</em> on &ldquo;Talaye&rdquo; and &ldquo;Zar&rdquo; in comparison with their mutant lines, but significant differences were observed between these parameters on mutant lines of &ldquo;RGS&rdquo;. Having suitable cultural traits, &ldquo;RGS 8-1&rdquo; was more susceptible than the other two mutant lines and its control cultivar &ldquo;RGS&rdquo; in terms of population growth of the pest. According to the two-sex life table, the net reproductive rate (<em>R</em><sub>0</sub>), intrinsic rate of increase (<em>r</em>), and finite rate of increase (&lambda;) were the highest on RGS 8-1 (98.63 offspring per individual, 0.208 and 1.231 day<sup>-1</sup>, respectively). Also, population projection showed the rapid growth of the pest on the latter line. There was a little difference between the same population parameters estimated by two methods of life table. Investigating some consequences of plant breeding using radiation techniques on insect fitness not only leads plant breeders to do more unfailing selections but also provides some enlightenment in pest management programs effectively when plantation of such crops is prioritized.Age-stage two-sex life table,Diamondback moth,Female age-specific life table,Gamma ray,Insect fitness985998http://journals.modares.ac.ir/browse.php?a_code=A-23-1000-8049&slc_lang=en&sid=23M.AkandehM.Akandeh100319475328460062643100319475328460062643NoDepartment of Plant Protection, College of Agriculture, Shahid Chamran University of Ahvaz, Ahvaz, Islamic Republic of Iran.Department of Plant Protection, College of Agriculture, Shahid Chamran University of Ahvaz, Ahvaz, Islamic Republic of Iran.F.KocheiliF.Kocheili100319475328460062644100319475328460062644NoDepartment of Plant Protection, College of Agriculture, Shahid Chamran University of Ahvaz, Ahvaz, Islamic Republic of Iran.Department of Plant Protection, College of Agriculture, Shahid Chamran University of Ahvaz, Ahvaz, Islamic Republic of Iran.M.SoufbafM.Soufbaf100319475328460062685100319475328460062685Yes
Agricultural, Medical and Industrial Research School, Karaj, P. O. Box: 31485/498, Islamic Republic of Iran.Agricultural, Medical and Industrial Research School, Karaj, P. O. Box: 31485/498, Islamic Republic of Iran.A.RasekhA.Rasekh100319475328460062645100319475328460062645NoDepartment of Plant Protection, College of Agriculture, Shahid Chamran University of Ahvaz, Ahvaz, Islamic Republic of Iran.Department of Plant Protection, College of Agriculture, Shahid Chamran University of Ahvaz, Ahvaz, Islamic Republic of Iran.K.MozafariK.Mozafari100319475328460062639100319475328460062639NoAgricultural, Medical and Industrial Research School, Karaj, P. O. Box: 31485/498, Islamic Republic of Iran.Agricultural, Medical and Industrial Research School, Karaj, P. O. Box: 31485/498, Islamic Republic of Iran.